Abstract
In this paper, the cyclic voltammetric and spectroelectrochemical behaviors of μ-oxamido Copper(Ⅱ) Binuclear Complex (deCu) in PBS were studied. Cyclic voltammograms of this complex in PBS(pH=9)exhibited two reductive peaks( Epc1 =-0.25 V, Epc2 = -0.50 V) at hanging mercury drop electrode(HMDE), peaks at -0.50 V and -0.25 V corresponded to the reduction of ligand and copper(Ⅱ) complex, respectively. The spectroelectrochimical experiments showed that there was a new absorption band at 440 nm, and the absorption peaks at 270 nm, 280 nm red shifted to 300 nm, 310 nm under potential of -0.75 V. It was meant that the Cu(Ⅱ) turned into low valent copper, simultaneously, a new large coupling system occurred. The redox reaction of film was measured two electrons and two protons transition process by cyclic voltammetry. Especially the deCu modified electrode showed a good catalytic ability to cysteine, L-Tryptophan as well as L-Proline.
Keywords
Binuclear complex, Electrochemically modified electrode, Electrocatalysis, Cysteine, Amino acid
Publication Date
2003-08-28
Online Available Date
2003-08-28
Revised Date
2003-01-09
Received Date
2003-01-08
Recommended Citation
Gui-lian GAO, Guo-bao LI, Qiu-xia YANG, Xue-lin WANG.
Electrochemistry and Electrocatalysis of a Novel μ-oxamido Copper(Ⅱ) Binuclear Complex[J]. Journal of Electrochemistry,
2003
,
9(3): 357-362.
DOI: 10.61558/2993-074X.1520
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol9/iss3/8
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